+91-8076753736[email protected]
logo
logo
-->

Coordination Compounds

Question
CBSEENCH12007347
Wired Faculty App

What is the coordination number and oxidation state of aluminium in the complex ion [Al(H2O)4(OH)2] +?

Solution
Coordination number of aluminium is = 6.


Oxidation state of aluminium is =3

Al=x 
H2O=0
OH- =-1

Thus oxidation state is 

x+0+(-2) =1
x= 2+1
x= 3.

Some More Questions From Coordination Compounds Chapter

Indicate the type of isomerism exhibited by the following complexes and draw structures for these isomers:
(i)    K[Cr(H2O)2(C2O4)2],                      (ii) [Co(en)3Cl3,
(iii) [Co(NH3)5(NO2)]|NO3]2,                 (iv) [Pt(NH3)(H2O)Cl2]

Explain on the basis of valence bond theory that [Ni(CN)4]2–  ion with square planar is diamagnetic and the [NiCl4]2– ion with tetrahedral geometry is paramagnetic.

Predict the number of unpaired electrons in the square planar [Pt(CN)4,]2– ion.

The hexaquo manganese(II) ion contains five unpaired electrons, while the hexacynoion contains only one unpaired electron. Explain using crystal field theory.

Calculate the overall complex dissociation equilibrium constant for the Cu(NH3)42+ion, given β4 for this complex is 2.1 x 1013.

Identify the ligands from the following coordination compounds:
(a)    [Co(en)2Cl(NO2)2]
(b)    K[Co(CN)(CO2)(NO)]
(c)    K3[Al(OH)6]
(d)    [Co(H2O)2(NH3)4](OH)3

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation